85984121 has 2 divisors, whose sum is σ = 85984122. Its totient is φ = 85984120.

The previous prime is 85984061. The next prime is 85984127. The reversal of 85984121 is 12148958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85285225 + 698896 = 9235^2 + 836^2 .

It is a cyclic number.

It is not a de Polignac number, because 85984121 - 2¹⁰ = 85983097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85984127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42992060 + 42992061.

It is an arithmetic number, because the mean of its divisors is an integer number (42992061).

Almost surely, 2^85984121 is an apocalyptic number.

It is an amenable number.

85984121 is a deficient number, since it is larger than the sum of its proper divisors (1).

85984121 is an equidigital number, since it uses as much as digits as its factorization.

85984121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 38.

The square root of 85984121 is about 9272.7623176700. The cubic root of 85984121 is about 441.3733279113.

The spelling of 85984121 in words is "eighty-five million, nine hundred eighty-four thousand, one hundred twenty-one".